'use strict'
const path = require('path')

function resolve(dir) {
  return path.join(__dirname, dir)
}

const CompressionPlugin = require('compression-webpack-plugin')
const MonacoEditorPlugin = require('monaco-editor-webpack-plugin')

const name = process.env.VUE_APP_TITLE || '系统管理平台' // 网页标题

const port = process.env.port || process.env.npm_config_port || 8888 // 端口

module.exports = {

  publicPath: process.env.NODE_ENV === "development" ? "/" : "./",

  outputDir: process.env.VUE_APP_OUTPUT,//'dist',

  assetsDir: 'static',

  lintOnSave: false,

  productionSourceMap: JSON.parse(process.env.VUE_APP_SOURCE_MAP),
  // webpack-dev-server 相关配置
  devServer: {
    host: '0.0.0.0',
    port: port,
    open: true,
    proxy: {

      [process.env.VUE_APP_BASE_API]: {
        target: process.env.VUE_APP_SERVICE_API,
        changeOrigin: true,
        // pathRewrite: {
        //   ['^' + process.env.VUE_APP_BASE_API]: ''
        // }
      },

      ['/*']: {
        target: process.env.VUE_APP_SERVICE_API,
        changeOrigin: true
      }
    },
    disableHostCheck: true
  },
  css: {
    loaderOptions: {
      sass: {
        sassOptions: { outputStyle: "expanded" }
      },
      stylus: {
        import: [
          resolve('./src/style/variables.styl')
        ],
        paths: resolve('./src/style')
      },
    }
  },
  configureWebpack: {
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    },
    plugins: [
      new CompressionPlugin({
        cache: false,                   // 不启用文件缓存
        test: /\.(js|css|html)?$/i,     // 压缩文件格式
        filename: '[path].gz[query]',   // 压缩后的文件名
        algorithm: 'gzip',              // 使用gzip压缩
        minRatio: 0.8                   // 压缩率小于1才会压缩
      }),
      new MonacoEditorPlugin({
          languages: ['javascript', 'css', 'html', 'sql', 'csharp', 'razor', 'json', 'java', 'C#']
      })
    ],
  },
  chainWebpack(config) {
    config.plugins.delete('preload') // TODO: need test
    config.plugins.delete('prefetch') // TODO: need test

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/assets/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/assets/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html')
            .use('script-ext-html-webpack-plugin', [{
              inline: /runtime\..*\.js$/
            }])
            .end()
          config.optimization.splitChunks({
            chunks: 'all',
            cacheGroups: {
              libs: {
                name: 'chunk-libs',
                test: /[\\/]node_modules[\\/]/,
                priority: 10,
                chunks: 'initial'
              },
              elementUI: {
                name: 'chunk-elementUI', // split elementUI into a single package
                priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
              },
              commons: {
                name: 'chunk-commons',
                test: resolve('src/components'), // can customize your rules
                minChunks: 3, //  minimum common number
                priority: 5,
                reuseExistingChunk: true
              }
            }
          })
        }
      )
  }
}
